三行代码实现C语言单元测试框架

/* tcut.h: Tiny C Unit Test framework*/
#ifndef _TCUT_H
#define _TCUT_H

#define tcut_assert(what, test) do { if (!(test)) return what; } while (0)
#define tcut_run_test(test) do { char *what = test(); nr_tests++; if (what) return what; } while (0)
extern int nr_tests;

#endif

#include <stdio.h>
#include "tcut.h"

int nr_tests = 0;

int foo = 7;
int bar = 4;

static char * test_foo()
{
tcut_assert("error, foo != 7", foo == 7);
return 0;
}

static char * test_bar()
{
tcut_assert("error, bar != 5", bar == 5);
return 0;
}

static char * all_tests()
{
tcut_run_test(test_foo);
tcut_run_test(test_bar);
return 0;
}

int main(int argc, char **argv)
{
char *result = all_tests();
if (result != 0) {
printf("%s\n", result);
}
else {
printf("ALL TESTS PASSED\n");
}

printf("Tests run: %d\n", nr_tests);

return result != 0;
}